JP3302178B2 - Plastic container closure - Google Patents

Plastic container closure

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Publication number
JP3302178B2
JP3302178B2 JP14005694A JP14005694A JP3302178B2 JP 3302178 B2 JP3302178 B2 JP 3302178B2 JP 14005694 A JP14005694 A JP 14005694A JP 14005694 A JP14005694 A JP 14005694A JP 3302178 B2 JP3302178 B2 JP 3302178B2
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Japan
Prior art keywords
portion
liner
container
container closure
annular
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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JP14005694A
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Japanese (ja)
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JPH082545A (en
Inventor
建夫 久保
知也 五十嵐
英彦 近江
Original Assignee
日本クラウンコルク株式会社
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Priority to JP14005694A priority Critical patent/JP3302178B2/en
Publication of JPH082545A publication Critical patent/JPH082545A/en
Application granted granted Critical
Publication of JP3302178B2 publication Critical patent/JP3302178B2/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3423Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
    • B65D41/3428Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt the tamper element being integrally connected to the closure by means of bridges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/78Moulding material on one side only of the preformed part
    • B29C70/80Moulding sealing material into closure members
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0435Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
    • B65D41/045Discs

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明は、合成樹脂製容器蓋に関<br>するものでより詳細には、密封精度が高く、容器口部との密封性、特に耐衝撃密封性や耐圧密封性に優れており、且つ製造も容易なライナー付合成樹脂製容器蓋に関<br>する。 BACKGROUND OF THE INVENTION This invention is more particularly in those relating <br> the plastic container closure, high sealing precision, the sealing property between the container opening, in particular the impact sealability and pressure sealed It has excellent sex, and also prepared regarding <br> facilitate a plastic container closure with liner.

【0002】 [0002]

【従来の技術】近年、プラスチックボトルやガラスボトルの口部の密封に使用する容器蓋としては、廃棄処理の容易さやリサイクルの容易さから、金属製のものに代わって、合成樹脂製容器蓋が好まれる傾向になっている。 In recent years, as a container closure for use in sealing of the mouth portion of the plastic bottles or glass bottles, the ease and recycling ease of disposal, in place of those made of metal, synthetic resin container closure It has become the trend of choice.

【0003】合成樹脂製容器蓋としては、容器蓋の天面部内面側を構成する合成樹脂製そのものを密封材として使用したものもあるが、密封性能、特に耐圧密封性能の点では、柔軟性やクッション性に優れたライナーやパッキングを用いたものが適している。 [0003] The plastic container closure, there is also obtained by using a synthetic resin itself that constitutes the top surface portion inner surface side of the container closure as a sealing material, sealing performance, it is particularly terms of the pressure sealing performance, flexibility Ya those using superior liner or packing cushioning are suitable.

【0004】特公昭63−44627号、63−487 [0004] Japanese Patent Publication No. 63-44627, 63-487
04号、特公平6−8141号公報には、このようなライナーを設けた容器蓋において、蓋殻体からのライナーの脱着を防止するため、スカート部から内方に延びている環状のライナー保持部材を設けることが開示されている。 04 No., Japanese Patent Kokoku 6-8141, in the container closure provided with such liners, in order to prevent desorption of the liner from the cap shell, liner retention ring extending from the skirt portion inwardly it is disclosed that provide a member.

【0005】一方、特公平6−13349号公報には、 On the other hand, Japanese Patent KOKOKU 6-13349,
蓋殻体内にパッキングを設けた容器蓋において、容器蓋の天面部に複数個の環状リブを設けた合成樹脂製容器蓋が開示されている。 A container closure having a packing Futakara body, plastic container closure is disclosed in which a plurality of annular ribs on the top surface portion of the container closure.

【0006】 [0006]

【発明が解決しようとする課題】しかしながら、前者のスカート部から内方に延びている環状のライナー保持部材を設ける方式では、容器蓋殻体を成形する際、容器蓋殻体の環状保持部材の部分が無理抜きとなるため、環状のライナー保持部材を肉薄のものとしなければならなく、ライナーの型押し成形に際して、外側スリーブと環状保持部材とを係合させるとき、環状保持部材が波打ち変形してライナーが外に漏れたり或いはライナー外周の密封部の寸法を厳密に制御することが困難となるという問題がある。 [SUMMARY OF THE INVENTION However, in the method of providing an annular liner retaining member extending from the former of the skirt portion inwardly, when forming the container closure shell, the annular holding member of the container closure shell since part is forced disconnect, not to be taken as the intended thin annular liner holding member, upon embossing molding of the liner, when engaging the outer sleeve and the annular holding member is deformed waving annular holding member there is a problem that it is difficult that the liner is to strictly control the dimensions of the seal leakage or or liner outer circumferential outside Te.

【0007】自生圧力を有する内容物に対する容器蓋では、天面部のバックリング変形により耐圧密封性が低下するから、ビン口頂部での密封よりもビン口外周部での密封が望ましいが、上記前者の容器蓋では、このような密封構造を取ることも困難である。 [0007] In the container closure for the contents having an autogenous pressure, since the breakdown voltage sealability is reduced by buckling deformation of the top surface, although the sealing of a bottle mouth outer peripheral portion than sealing of a bottle mouth top is desired, the former in the container closure, it is difficult to take such a sealing structure.

【0008】一方、後者の提案の容器蓋では、ビン口外周部での密封を行うという点では満足しうるものであるが、容器蓋内にパッキングを一枚一枚装填するという煩瑣で手間のかかる操作が必要であり、また装填したパッキングが脱落する場合もあり、作業性の点でも未だ十分満足しうるものではない。 On the other hand, in the container closure of the latter proposal, in terms of performing the sealing of a bottle mouth outer peripheral portion but as it can satisfy, labor and troublesome that loaded one by one packing in the container lid such operation is required, also sometimes loaded packing comes off, not capable of yet satisfactory in terms of workability.

【0009】従って、本発明の目的は、密封精度が高く、容器口部との密封性、特に耐衝撃密封性や耐圧密封性に優れており且つ製造も容易なライナー付合成樹脂製容器蓋を提供するにある。 It is therefore an object of the present invention has a high sealing precision, the sealing property between the container opening, in particular impact sealability and excellent in withstand voltage sealability and easy synthetic resin container with lid liner manufacturing It is to provide.

【0010】 [0010]

【課題を解決するための手段】本発明によれば、合成樹脂容器蓋の天面部と、内側に容器口部係合用ネジを備えたスカート部と、該天面部内面から内向きに且つスカート付根近傍部分より径内方に小間隔の空隙をおいて形成された環状凸部と、前記天面部内側に押圧成形により施された密封用ライナーと、環状凸部の内側面にこれに沿って形成されたライナーの実質上の垂直部とから成り、 According to the present invention SUMMARY OF], a top surface of the synthetic resin container closure, a skirt portion having a container mouth portion engaging screw inside, and the skirt root inwardly from the top panel face the inner surface an annular convex portion formed at a gap of small intervals radially inner side than the portion near the sealing liner applied by press forming inside the top section, formed along which the inner surface of the annular projection consists of a substantially vertical portion of the liner that is,
容器口部外側縁とライナーの実質上の垂直部との係合により密封性をもたせると共に、前記環状凸部とスカート Rutotomoni imparted sealability by the engagement of the substantially vertical portion of the container mouth portion outer edge and the liner, the annular protrusion and the skirt
付根近傍部分との間にこれらを橋絡する複数のリブが周 A plurality of ribs circumferentially bridging them between the base portion near
状に配置されたことを特徴とするライナー付き合成樹脂製容器蓋が提供される。 Liner plastic container closure, characterized in that arranged on Jo is provided.

【0011】本発明において、環状凸部の内周面が天面部に対して実質上垂直に設けられ且つ環状凸部の内周面が密封すべき容器口部の径よりも大きく且つ容器口部係合用ネジの径よりも小さい径を有することが最も好ましい。 [0011] In the present invention, large and the container opening than the diameter of the container mouth portion inner peripheral surface to be sealed of and annular projection provided substantially perpendicular to the inner peripheral surface the top surface portion of the annular projection and most preferably a diameter smaller than the diameter of the engagement screw. また、前記前記環状凸部が先細りでしかも外周面が内向きに傾斜した形状を有することが望ましく、内周面が先端に向けてやや内向きに傾斜した可撓性先端部または内向きに突出した先端部を備えていることが特に好ましい。 Further, projecting said it is desirable to have an annular convex portion is tapered in addition the outer peripheral surface is inclined inwardly shaped, inner peripheral surface is a flexible tip or inwardly inclined inwardly slightly toward the distal end it is particularly preferably provided with the tip. 更に、前記環状凸部が実質上垂直の内周面を備えていることもできるし、前記環状凸部がやや内向きに傾斜した内周面を備えていることもできる。 Furthermore, the to annular convex portion may be provided with an inner peripheral surface of the substantially vertical, it can also be said annular protrusion is provided with an inner peripheral surface inclined inwardly somewhat.

【0012】また本発明においては、 前述した複数のリブを径方向に対して傾斜した角度で配置するのが特に望ましい。 [0012] In the present invention, to place at an inclined angle a plurality of ribs as described above with respect to the radial direction is particularly desirable.

【0013】 [0013]

【作用】本発明の合成樹脂製容器蓋は、合成樹脂製の蓋殻体とこの殻体の内面側に設けられたライナーとから成り、しかも蓋殻体は天面部と、内周面に容器係合用ネジを備えたスカート部とから成っているが、該天面部内面から内向きに且つスカート付根近傍部分より径内方に小間隔の空隙をおいて環状凸部を設けたこと及びこの環状凸部の内側面に沿ってライナーの実質上の垂直部(立ち下がり部)を形成したことが顕著な特徴である。 Plastic container closure of the effects of the present invention is made of synthetic resin of the cover shell and the liner provided on the inner surface side of the shell, yet closure shell is a top surface portion, the container on the inner peripheral surface Although consists a skirt portion having an engaging screw it and the annular radially inner side relative and the skirt root portion near inwardly from the top panel face the inner surface at the air gap of small gap is provided an annular protrusion substantially vertical portion of the liner along the inner surface of the projection that was formed (falling portion) is a prominent feature.

【0014】即ち、上記環状凸部を天面部内面に設けたことにより、押圧成形により径外方に展延されるライナー材が凸部にせき止められて、実質上の垂直部(押圧成形の際は立ち上がり部)を形成し、容器口部の外周部とライナーの実質上の垂直部との間で、上下に一定の幅を持った筒状の面積シールが可能となる。 [0014] That is, by providing the annular projection on the top surface portion inner surface, and the liner material to be spread radially outward by the pressing mold is stopped by the protrusion, when the vertical portion of the substantially (press forming forms a rising portion), between the outer peripheral portion and the substantially vertical portion of the liner of the container opening, it is possible to cylindrical area seal having a constant width in the vertical direction. このため、本発明のライナー付き合成樹脂製容器蓋では、天面部が圧力によりパネリング変形しても、持続した耐圧密封が行われることになる。 Therefore, the liner plastic container closure of the present invention, even if the paneling deformed top portion by the pressure, so that sustained breakdown voltage sealing is performed. しかも、容器への打栓や容器からの開栓時に環状凸部とライナーの実質上の垂直部との間に作用する力も、主として上下方向或いは周方向の剪断力であって、引き剥がし力ではないので、環状凸部とライナー実質上の垂直部との間の密着性が損なわれないという利点がある。 Moreover, the force acting between the annular protrusion when unplugging and substantially vertical portion of the liner from the capping and containers to the container is also a predominantly shear vertical direction or circumferential direction, at the peeling force since there is advantageous in that the adhesion is not impaired between the annular protruded portion and the liner substantially vertical portion.

【0015】また、環状凸部と付け根近傍のスカート部との間に小間隔の空隙部を設けたので、環状凸部に径外方に広がる弾性変形を許容でき、これにより容器口部外周に若干の寸法誤差があっても打栓の際確実な密封が可能となり、前述した上下方向の面積シールと相俟って、 Further, since there is provided a gap portion of the small gap between the annular projection and the base near the skirt portion, it can tolerate elastic deformation extending radially outward to the annular convex portion, thereby the container opening periphery even if there is a slight dimensional error enables reliable seal during capping, I area seal coupled with the vertical direction as described above,
耐衝撃シール性をも顕著に向上させることができる。 Also impact sealability can be remarkably improved.

【0016】更に、天面部内面に環状凸部が設けてあるので、容器蓋殻体を成形するときにもこの部分が金型からの無理抜きでないため、成形操作が容易であるばかりではなく、環状凸部の形状及び寸法等にも格別の制約を受けないという利点もある。 Furthermore, since are annular projection is provided on the top surface inner surface, since even this part when molding the container closure shell is not unreasonable disconnect from the mold, not only molding operation is easy, on the shape and size of the annular projection or the like there is an advantage that is not subject to special restrictions.

【0017】本発明において、環状凸部の内周面を天面部に対して実質上垂直に設け、しかも環状凸部の内周面を密封すべき容器口部の外周径よりも大きく且つ容器口部係合用ネジの内周径よりも小さい径を有するようにすることにより、容器の打栓及び開栓が容易に行われるばかりではなく、容器殻体の成形も、ライナーの押圧成形も容易に行うことができる。 [0017] In the present invention, substantially arranged perpendicularly to the inner peripheral surface the top surface portion of the annular projection, moreover larger and the container mouth than the outer peripheral diameter of the container mouth portion to be sealed inner peripheral surface of the annular projection by to have a diameter smaller than the inner circumference of the parts engaging the screw, not only capping and unplugging of the container is easily performed, also molding of the container shell, also easily press forming of the liner It can be carried out.

【0018】また、前記環状凸部を、先細りでしかも内周面が先端に向けてやや内向きに傾斜した形状のものとすることにより、容器蓋殻体の成形に際しての型抜きが容易となるばかりでなく、ライナーの殻体への保持が確実になると共に、環状凸部と成形に使用する外周スリーブとの密封的係合も確実になるという利点がある。 Further, the annular projection, by the inner circumferential surface yet tapered is assumed the shape inclined inwardly slightly toward the distal end, which facilitates demolding of the time the molding of the container closure shell well, together with the holding of the shell of the liner is ensured, there is an advantage that it is ensured also sealingly engages the outer sleeve to be used for forming the annular convex portion. 特に環状凸部が先細りでしかも内周面が先端に向けてやや内向きに傾斜した可撓性先端部または内向きに突出した可撓性先端部を備えているのが上記の作用効果の点で特によい。 In particular point of operation and effect of the of the inner peripheral surface Moreover the tapered annular projection is provided with a flexible distal end portion protruding inclined flexible tip or inward inwardly slightly toward the distal end in particularly good. 環状凸部の内周面は垂直であっても良いし、やや内向きに傾斜した形状であってもよい。 The inner peripheral surface of the annular protrusions may be vertical, or may be a shape inclined slightly inwardly.

【0019】 [0019]

【実施例】[容器蓋] 本発明の容器蓋の一例を容器口部と共に示す図1において、この容器蓋は、容器蓋殻体(シェル)1とその内部に設けられたライナー2とからなっており、容器口部3 EXAMPLES In [container lid] Figure 1 an example of the container closure shown with the container port of the present invention, the container lid is made from the container closure shell (shell) 1 and liner 2 which provided therein and, the container mouth part 3
上に打栓されている。 It is stoppered above. 蓋殻体1は合成樹脂の射出成形或いは圧縮成形により一体に成形されていて、天面部4及び該天面部の周縁から垂下しているスカート部5からなっている。 Closure shell 1 is synthetic resin injection molding or they are integrally molded by compression molding, consists skirt 5 which depends from the periphery of the top surface 4 and the top panel surface. スカート部5の内面側には容器口部3に締結するための雌ねじ6が形成されており、一方外面側には容器蓋を把持するためのローレット溝7が形成されている。 On the inner surface of the skirt portion 5 is formed internal thread 6 for fastening to the container mouth part 3, whereas knurls 7 for gripping the container lid on the outer surface side. スカート部5の下方には、容器と係合するフラップ片8aを備えた締結用バンド8が、開栓の際切断されるミシン目等のピルーファプルーフ機構9を介して設けられている。 Below the skirt portion 5, the fastening band 8 equipped with flap pieces 8a for container engaging are provided via the pin Rufa proof mechanism 9 of perforations or the like to be cut during cap removal.

【0020】容器口部3は、ガラス或いはプラスチック等で形成されており、その側面には締結及び開栓のための雄ねじ10が設けられており、その下方には係止用あご部11及び充填並びに移送工程において容器を支持するための支持リング12が設けられている。 The container mouth portion 3 is formed of glass or plastic or the like, the external thread 10 is provided for fastening and unplugging the side surface, the locking jaws 11 and filled in its lower support ring 12 for supporting the container is provided in and transfer process. 容器口部3 The container mouth part 3
には、容器蓋のライナー2との密封に役立つ頂部13及び頂部の外周側に形成された密封用外周部14がある。 The, there is sealing the outer peripheral portion 14 formed on the outer peripheral side of the top 13 and top helps seal the liner 2 of the container closure.

【0021】本発明の容器蓋においては、天面部内面1 [0021] In the container closure of the present invention, the top surface portion inner surface 1
5から内向きに且つスカート付根近傍部分16より径内方に小間隔の空隙17をおいて環状凸部18を設ける。 Inwardly from 5 and the radial inner side than the skirt root portion near 16 at a gap 17 of a small gap is provided an annular protrusion 18.
図1に示す具体例において、環状凸部18の内側面19 In the embodiment shown in FIG. 1, the inner surface 19 of the annular projection 18
は天面部内面に対して実質上鉛直であり、その先には先細りでしかも内周面が先端に向けてやや内向きに傾斜した可撓性先端部20を備えている。 And a substantially a vertical, flexible tip 20 which is inclined inwardly slightly toward the distal end inner circumferential surface addition is tapered in its above for the top surface portion inner surface.

【0022】容器蓋殻体1の天面部内側には、押圧成形により施された密封用ライナー2が設けられているが、 [0022] On the inside top surface of the container closure shell 1, but the sealing liner 2 which has been subjected by the press forming is provided,
殻体1の環状凸部18の内側面19にこれに沿って形成されたライナーの立下り部21が形成されていることが、容器口部の密封用外周部14との間に耐圧衝撃性及び耐衝撃密封性に優れた密封構造を形成するために重要である。 The falling edge 21 of the liner is formed along which the inner surface 19 of the shell 1 of the annular projection 18 is formed, the withstand voltage impact between the sealing outer peripheral portion 14 of the container opening and it is important to form a good sealing structure impact sealability. 図に示す具体例についてより詳細に説明すると、密封用ライナー2は、その成形法にも関係するが、 To describe in more detail the specific example shown in the figure, the sealing liner 2, is related to its molding,
中央に薄肉の中央部22があり、その周囲に厚肉の周辺部23があり、この厚肉周辺部23の外周側に前述した実質上の垂直部21がある。 There are thin central portion 22 in the center, there are thick in the peripheral portion 23 around its periphery, there is a substantially vertical portion 21 described above on the outer peripheral side of the thick peripheral portion 23. 薄肉中央部22と厚肉周辺部23との間に、テーパ状の下向き突起部24が形成されているが、これは厚肉周辺部及び実質上の垂直部の形成を容易に行わせるためのものであり、これについては成形法に関して後から詳述する。 Between the thin central portion 22 and the thick peripheral portion 23, although tapered downward protrusion 24 is formed, which for the formation of the vertical portion on the thick peripheral portion and the substantially facilitated It is those, for this will be described in detail later with respect to the molding method.

【0023】容器蓋殻体中での密封用ライナーの成型方法を説明するための図2乃至図5において、図2(A) [0023] In FIGS. 2 to 5 for explaining the method of molding the sealing liner in the container Futakara body in, FIG. 2 (A)
は密封用ライナー樹脂供給工程、図3(B)はライナー成型用工具の下降開始工程、図4(C)は成形準備終了工程、図5(D)は成形終了工程をそれぞれ示す。 The sealing liner resin supply step, FIG. 3 (B) shows starts lowering step of the liner molding tool, Fig. 4 (C) is molded preparation complete process, FIG. 5 (D) is a post-forming process, respectively.

【0024】用いる容器蓋殻体1は、基本的に図1に示したものと同様であるが、ッ図2(A)のものでは、容器蓋の内側から見たより詳細な構造が示されている。 The used container closure shell 1 is similar to that basically shown in FIG. 1, it is intended Tsu Figure 2 (A), and the detailed structure thereof as viewed from the inside of the container closure is shown there. 即ち、前述したミシン目は、スカート部5と締結用バンド8とを完全に切断する切断線29と、スカート部5及び締結用バンド8を周方向に間隔をおいて連結する内方リブ25とから成っている。 That is, perforation described above is provided with a cutting line 29 for completely cutting the skirt portion 5 and the fastening band 8, an inner rib 25 which connects at intervals skirt portion 5 and the fastening band 8 circumferentially It is made up of. また、スカート部5の内面側の雌ネジ6は周方向に一定間隔をおいて軸方向に切り欠かれていて、開栓時のガス抜き26を形成している。 Also, the female screw 6 of the inner surface of the skirt portion 5 have been cut out in the axial direction at predetermined intervals in the circumferential direction to form a vented 26 during cap removal. 更に、締結用バンド8の下端縁(図2では上端となっている)には、容器と係合するフラップ片8aを補強するための内向きのカール部27が形成されている。 Furthermore, the lower edge of the fastening band 8 (which is the upper end in FIG. 2), the curled portion 27 inwardly for reinforcing the flap pieces 8a that container and engaged is formed. 更にまた、打栓に際して、容器口部と締結用バンド8との相対的な回転を防止し、ミシン目における内方リブ25の切断を確実に防止するためにフラップ片8aは径方向に対して一定の傾斜角度で設けられていることも明らかである。 Furthermore, upon capping to prevent relative rotation between the container opening and the fastening band 8, the flap piece 8a in order to reliably prevent the cutting of the inner rib 25 in the perforations in the radial direction it is also apparent that provided at a certain inclination angle.

【0025】図2(A)において、容器蓋殻体1はその天面部が下側となるように、ライナー成形装置のアンビル(図示せず)上に保持され、この容器蓋殻体1内に押出機のノズルを通して、密封用ライナー形成用の樹脂組成物の溶融ペレット28が供給される。 [0025] In FIG. 2 (A), so that the container closure shell 1 is the top portion and the bottom, is held on the anvil of the liner forming apparatus (not shown), to the vessel closure shell 1 through a nozzle of the extruder, melting the pellets 28 of the sealing liner forming the resin composition is supplied.

【0026】図3(B)において、密封用ライナーの成形用アセンブリ装置は、ライナー中央部形成用先端部3 [0026] In FIG. 3 (B), the molding assembly system of sealing liner, the liner middle portion forming the distal end portion 3
0を有するコア31、ライナー密封部形成用先端部32 The core 31 with 0, liner seal forming tip 32
及び先端の内周側に切り欠き36を有する中間ブッシュ33及び容器蓋の前記環状凸部18と係合する係合用先端部34を有する外側スリーブ35とから成り、これらの部材は同心円状に配置されている。 And consists outer sleeve 35 and having an engagement tip 34 that engages the annular projection 18 of the intermediate bush 33 and a container lid having a notch 36 on the inner peripheral side of the tip, these members are arranged concentrically It is. 中間ブッシュ33 Intermediate bush 33
が最も下方に突出した状態にあり、外側スリーブ35はそれよりやや後退した位置にあり、コア31は最も後退した位置にある。 There lowermost in a state projecting, the outer sleeve 35 is in a position slightly retracted from it, the core 31 is in the most retracted position. 図示していないが、これらの各部材は流体シリンダーのような加圧手段或いはスプリングのような弾性部材を介してカム等の加圧機構に接続されており、昇降動可能に設けられている。 Although not shown, each of these members is connected to a pressurizing mechanism such as a cam via an elastic member such as a pressing means or springs such as a fluid cylinder, it is provided to be moved up and down. コア31、中間ブッシュ33及び外側スリーブ35は上記状態を維持しながら容器蓋殻体1に向けて下降し、コア31が溶融ペレット28を押圧し始める。 Core 31, intermediate bush 33 and outer sleeve 35 is lowered toward the container closure shell 1 while maintaining the above state, the core 31 starts pushing the molten pellet 28.

【0027】成形用アセンブリ装置31,33,35はなおも下降を続け、図4(C)に示すとおり、中間ブッシュ33のライナー密封部形成用先端部32が容器蓋殻体1の天面部内面と係合し、容器蓋殻体1を確実に保持する。 The molding assembly device 31, 33, 35 continues to still descending, as shown in FIG. 4 (C), the liner sealing portion forming the distal end portion 32 of the intermediate bush 33 of the container closure shell 1 top panel inner surface engage and to hold the container closure shell 1 reliably. 同時に外側スリーブ35の係合用先端部34が容器蓋の環状凸部18と密封的に係合し、これによりライナーの厚肉外周部及び実質上の垂直部を形成するための準備が完了する。 At the same time sealingly engage the annular projection 18 engaging tip 34 of the container closure of the outer sleeve 35, thereby preparing for formation of the thick outer peripheral portion and the substantially vertical portion of the liner is completed. この間も、コア部31は下降し続け、 During this period, the core part 31 continues to descend,
溶融ペレット28を押圧する。 To press the melted pellet 28.

【0028】図5(D)に示す押圧終期において、ライナー中央部形成用先端部30と天面部内面15との間に充満したライナー形成用樹脂28は、なおもコア31で押圧され、樹脂圧によりコア31の外側面と中間ブッシュ33の切り欠き36とで規定される空間内に流入して、中間ブッシュ33をその圧力に抗して後退させる。 [0028] In the pressing end shown in FIG. 5 (D), the liner-forming resin 28 filled between the liner middle portion forming the distal end portion 30 and the top surface portion inner surface 15 is still pressed by the core 31, the resin pressure and it flows into the space defined by the notches 36 of the outer surface of the core 31 and intermediate bush 33, the retracting against the intermediate bushing 33 to the pressure.
これにより、中間ブッシュのライナー密封部形成用先端部32、外側スリーブの係合用先端部34、天面部内面15の周辺部及び環状凸部18の内側面19で規定される空間に樹脂が流入して、これによりライナー中央部を薄肉に成形すると共にライナー周辺部を中央部より厚肉に且つ環状凸部内側面19にライナーの実質上の垂直部(図では容器蓋を倒立させているので、立ち上がり部となる)を形成させることが可能となる。 Thus, the intermediate bushing liner seal forming tip 32, the resin flows into space defined by the inner surface 19 of the peripheral portion and the annular projection 18 of the tip for engagement of the outer sleeve portion 34, the top surface portion inner surface 15 Te, since thereby that the liner periphery is inverted the container lid in the vertical section (figure and the real liner annular convex portion side 19 from the thick central portion while forming the liner middle portion thin, the rise a Department) it is possible to form.

【0029】本発明の容器蓋の製造法では、環状凸部1 [0029] In the production process of the container closure of the present invention, the annular projection 1
8が天面部4に対してほぼ垂直に設けているので、環状凸部18と外側スリーブ35との係合密封を、この環状凸部18を変形させることなく確実に行うことができ、 Since 8 is provided substantially perpendicular to the top surface portion 4, the engagement seal of the annular projection 18 and the outer sleeve 35, can be surely performed without deforming the annular protrusion 18,
その結果として、ライナー形成用樹脂の漏れ等を生じることなしに、寸法精度の極めて高いライナーの実質上の垂直部を形成させることができる。 As a result, without causing leakage of the resin liner formed, it is possible to form a substantially vertical portion of the very high liner dimensional accuracy. また、容器蓋殻体1 In addition, the container closure shell 1
の成形に際しても、環状凸部18の成形が型からの無理抜きとならないため、成形が容易で、しかも環状凸部1 In the molding also because the molding of the annular convex portion 18 does not become excessive bleeding from the mold, easily molded, yet the annular projection 1
8の諸寸法を変形等を生じない所望の寸法に設定できるという利点がある。 There is an advantage that the dimensions of 8 can be set to a desired dimension which does not cause deformation and the like.

【0030】また、本発明の容器蓋においては、図1によく示されるように、ライナーの実質上の垂直部21と容器口部の密封用外周部14との間で、容器軸方向に一定の幅を持った面積シールが行われるので、容器と容器蓋との間に、圧力や衝撃により相対的な軸方向のずれを生じても、優れた密封性が得られることが明らかである。 Further, in the container closure of the present invention, as best shown in FIG. 1, with the sealing peripheral portion 14 of the substantially vertical portion 21 and the container mouth portion of the liner, fixed to the container axis the area seal having a width of is made, between the container and the container lid, even if a relative axial displacement by the pressure or impact, it is clear that excellent sealing is obtained. また、環状凸部18は蓋殻体のスカート部5から小間隔をおいて独立に設けられているので、蓋殻体1に衝撃が加わった場合でも上記シール部にその影響が及ぶのを回避乃至緩和でき、また容器口部の径方向に加わる外力をも環状凸部18の弾性変形で緩和できるという利点もある。 Also, avoid the annular protrusion 18 is provided independently at a small distance from the skirt portion 5 of the closure shell, extends its influence on the seal portion even when an impact is exerted on the closure shell 1 to be relaxed, and there is also an advantage that the external force applied in the radial direction of the container mouth part can be alleviated even in the elastic deformation of the annular projection 18.

【0031】本発明において、環状凸部18と蓋殻体スカート部5との間に小間隔の空隙が形成されていることは必須不可欠であるが、所望によっては、両者の間にリブ構造を設けることができる。 [0031] In the present invention, it is indispensable that the gap of the small interval is formed between the annular projection 18 and the closure shell skirt 5, desired by the rib structure between the two it can be provided.

【0032】このリブ構造の実施例を示す図6(側面断面図)、図7(下面図)及び図8(斜視図)において、 In FIG. 6 illustrates an embodiment of the rib structure (side sectional view), FIG. 7 (bottom view) and 8 (perspective view),
前述した環状凸部18とスカート付根近傍部分16との間にこれらを橋絡する複数のリブ38が周方向に間隔をおいて周状に配置されている。 A plurality of ribs 38 are arranged circumferentially at intervals in the circumferential direction bridging them between the annular projection 18 and the skirt base portion near 16 described above. このリブ38は、環状凸部18のある程度の変形は許容するが、過度の変形は防止し、しかも環状凸部18を機械的に強化する作用を行う。 The rib 38 is some deformation of the annular protrusion 18 permits, excessive deformation is prevented, moreover performs an action to strengthen the annular projection 18 mechanically.

【0033】この複数のリブ38は、径方向に対して傾斜した角度で配置するのが特に望ましく、リブ31の内向きの傾斜方向と蓋殻体の開栓方向とが一致することが開栓容易性の点で望ましい。 [0033] The plurality of ribs 38 is particularly desirable to arrange at an oblique angle relative to the radial direction, that the cap removal direction of the inclination direction and Futakara body inward of the rib 31 coincides unplugging desirable in view of easiness. というのは、本発明の口部外周密封形式では、開栓トルクがやや大きくなる傾向があるが、上記のリブの配置では、手による開栓も比較的容易である。 Because, in the mouth periphery sealing form of the present invention tend to unplugging torque is slightly larger, in the arrangement of the ribs, unplugging is relatively easy manual.

【0034】容器蓋殻体の環状凸部の変形を示す図9乃至図12において、図9の例では、環状凸部18は内方に向けて先細りでしかも外周面19bは内向きに傾斜した形状を有している。 [0034] In FIGS. 9 to 12 show a modification of the annular projection of the container closure shell, in the example of FIG. 9, tapered, yet the outer peripheral surface 19b toward the annular projection 18 is inwardly inclined inwardly It has a shape. 環状凸部18の内周面19は垂直である。 The inner peripheral surface 19 of the annular protruded portion 18 is vertical. 図10の例では、同様に環状凸部18は内方に向けて先細りでしかも外周面19bは内向きに傾斜した形状を有しているが、環状凸部18の内周面19もやや内向きに傾斜している。 In the example of FIG. 10, similarly has an annular protrusion 18 has a shape inclined tapered, yet the outer peripheral surface 19b is inwardly toward the interior, the inner somewhat also the inner peripheral surface 19 of the annular projection 18 We are inclined in the direction. 図11の例では、やはり環状凸部18は内方に向けて先細りでしかも外周面19bは内向きに傾斜した形状を有しているが、内向きに突出した可撓性先端部20を備えている。 In the example of FIG. 11, also has an annular protrusion 18 has a shape inclined tapered, yet the outer peripheral surface 19b is inwardly toward the interior, with a flexible tip 20 that protrudes inwardly ing. 図12の例では、環状凸部18は内方に向けて先細りでしかも外周面19bは内向きに傾斜した形状を有しており、環状凸部18の内周面19は垂直であるが、内周面がやや内向きに傾斜した可撓性先端部20を有している。 In the example of FIG. 12, the annular projection 18 has a shape inclined tapered, yet the outer peripheral surface 19b is inwardly toward the interior, the inner circumferential surface 19 of the annular protruded portion 18 is a vertical, the inner peripheral surface has a flexible tip 20 which is inclined inwardly somewhat.

【0035】容器蓋殻体は、容器内外の圧力差にかかわらず、ライナーによる密封が維持されるような剛性を有するべきであり、各種プラスチックから形成されているのがよい。 The container closure shell, regardless of the pressure difference between the vessel and out, should have a stiffness such as sealing by the liner is maintained, it is preferable formed from various plastics. プラスチックとしては、高密度ポリエチレン、ポリプロピレン、熱可塑性ポリエステル、ポリアミド、スチレン系樹脂、ABS樹脂等が挙げられる。 As the plastic, high density polyethylene, polypropylene, thermoplastic polyesters, polyamides, styrene resins, ABS resins. 殻体の形状は、王冠、スクリュウキャップ、ピルファープルーフ型キャップ、ラグキャップ等であってよい。 The shape of the shell body, crown, screw cap, pilfer-proof caps, may be lug cap or the like.

【0036】本発明においてライナーとは容器蓋殻体に施され、その場で密封に必要な形状に成形され、必要なクッション性と柔軟性を有するものをいう。 [0036] The liner in the present invention is applied to the container closure shell, molded into the shape required to seal on the spot, instances that have a cushioning property and flexibility required. これらのライナー形成用樹脂としては、オレフィン樹脂、例えば低−、中−、高−密度のポリエチレン、アイソタクティックポリプロピレン、プロピレン−エチレン共重合体、ポリブテン−1、エチレン−プロピレン共重合体、ポリブテン−1、エチレン−ブテン−1共重合体、プロピレン−ブテン−1共重合体、プロピレン−ブテン−1共重合体、エチレン−プロピレン−ブテン−1共重合体、エチレン−酢酸ビニル共重合体、イオン架橋オレフィン共重合体(アイオノマー)或いはこれらのブレンド物等のオレフィン系樹脂が適当である。 These liners forming resin, an olefin resin such as low -, medium -, high - density polyethylene, isotactic polypropylene, propylene - ethylene copolymer, polybutene-1, ethylene - propylene copolymer, polybutene - 1, ethylene - butene-1 copolymer, propylene - butene-1 copolymer, propylene - butene-1 copolymer, ethylene - propylene - butene-1 copolymer, ethylene - vinyl acetate copolymer, ionically crosslinked olefin copolymer (ionomer) or olefin resins such as these blends are suitable.

【0037】上記オレフィン樹脂は、他のエラストマー、例えば、エチレン−プロピレン共重合ゴム、エチレン−プロピレン−ジエン共重合ゴム、SBR,NBR、 [0037] The olefin resin, other elastomers, e.g., ethylene - propylene copolymer rubber, ethylene - propylene - diene copolymer rubber, SBR, NBR,
熱可塑性エラストマーとのブレンド物で使用することもできる。 It is also possible to use a blend of a thermoplastic elastomer.

【0038】また、塩化ビニル樹脂プラスチゾル、即ち、塩化ビニル樹脂を可塑剤に分散させ、加熱によりゲル化させるものや、同様にアクリル樹脂プラスチゾル、 Further, a vinyl chloride resin plastisol, i.e., to disperse the vinyl chloride resin in a plasticizer, and one which gelled by heating, likewise acrylic resin plastisol,
即ち、アクリル樹脂を可塑剤に分散させ、加熱によりゲル化させるものをライナーの形成に使用してもよい。 That is, by dispersing the acrylic resin in a plasticizer, the one which gelation may be used to form the liner by heating.

【0039】熱成形性の点ではオレフィン樹脂とのブレンド物で使用することが好ましい。 [0039] In terms of thermoformability is preferably used in a blend with an olefin resin. 本発明に用いるライナーは、脱酸素剤含有樹脂層を備えていることもでき、 Liner used in the present invention may also be provided with a oxygen scavenger-containing resin layer,
このライナーは、脱酸素剤含有樹脂単独から形成されていてもよいし、脱酸素剤含有樹脂と他のライナーとの複合体からなっていてもよい。 The liner may be formed from the oxygen scavenger-containing resin alone, it may be made of a composite of the oxygen scavenger-containing resin and another liner.

【0040】環状凸部18の内周面19が密封すべき容器口部の外周密封部径(R)よりも大きく且つ容器口部係合用ネジの径よりも小さい径(r)を有することは当然であるが、ライナーの実質上の垂直部21の厚み(d)との間には、次の関係があるべきである。 [0040] inner circumferential surface 19 of the annular protruded portion 18 has a smaller diameter than the large and the container mouth portion engaging screw than the outer peripheral sealing portion diameter of the container opening to be sealed (R) diameter (r) is of course, between the substantially the thickness of the vertical portion 21 of the liner (d), should have the following relationship. r>R>r−d r> R> r-d

【0041】環状凸部18の高さや厚みは、容器蓋の全体の大きさによっても相違するが、一般に高さが1.6 The height and thickness of the annular projection 18, which varies also by the overall size of the container closure, typically a height of 1.6
乃至2.3mm,特に2.0乃至2.2mmの範囲にあるのがよく、一方厚みは0.2乃至0.5mm,特に0.3乃至0.4mmの範囲にあるのがよい。 To 2.3 mm, especially the well in a range of 2.0 to 2.2 mm, whereas thickness may be in the range of 0.2 to 0.5 mm, in particular 0.3 to 0.4 mm.

【0042】また、ライナーの実質上の垂直部(立下り部)21の厚みは、0.4乃至1.0mm,特に0.5 Further, substantially vertical portion (falling portion) 21 of the thickness of the liner is 0.4 to 1.0 mm, particularly 0.5
乃至0.8mmの範囲にあるのがよく、ライナーの実質上の垂直部(立下り部)21と容器口部外周密封部との食い込み寸法は、0.2乃至0.4mm程度とするのが適当である。 Or better in the range of 0.8 mm, bite size of the substantially vertical portion (falling portion) 21 and the container mouth portion outer peripheral sealing portion of the liner is from 0.2 to 0.4mm approximately it is appropriate.

【0043】本発明の容器蓋では、多くの変更が可能である。 [0043] In the container lid of the present invention, many variations are possible. 例えば、多くの場合、容器蓋殻体とライナーとの間で十分満足できる密着性が得られるが、接着を完全に行うために、容器蓋内面に接着剤を塗布したり、或いはライナー内に接着性付与成分を配合したりすることができる。 For example, in many cases, although adhesion sufficiently satisfactory between the container closure shell and the liner is obtained, the adhesive in order to perform the adhesion completely, or applying an adhesive to the lid inner surface, or in the liner or it can be blended sex imparting component. また、容器蓋殻体の天面部内面にライナーとの間に機械的係合を増大させるための突起等を設けることもできる。 It is also possible to provide a projection or the like for increasing the mechanical engagement between the liner to the top surface portion the inner surface of the container closure shell.

【0044】 [0044]

【発明の効果】本発明の合成樹脂製容器蓋では、容器蓋殻体の天面部内面にほぼ垂直に且つスカート付根近傍部分より径内方に小間隔の空隙をおいて環状凸部を設けたことにより、ライナーの成形に際して、この環状凸部の内側面に沿ってライナーの実質上の垂直部を形成することができた。 The plastic container closure of the present invention, the radially inner side than the substantially vertically and skirt root portion near the top surface the inner surface of the container closure shell at a gap of small gap is provided an annular protrusion by, in the molding of the liner, it was possible to form a substantially vertical portion of the liner along the inner surface of the annular projection.

【0045】このため、容器口部の外周部とライナーの実質上の垂直部との間で、上下に一定の幅を持った筒状の面積シールが可能となり、本発明のライナー付き合成樹脂製容器蓋では、天面部が圧力によりパネリング変形(ドーミング変形)しても、持続した耐圧密封が行われ、また衝撃等が加わった場合にも優れた密封性が維持されるという利点がある。 [0045] Therefore, between the outer peripheral portion and the substantially vertical portion of the liner of the container opening, vertically enables cylindrical area seal having a constant width, made liner of synthetic resin of the present invention the container closure, even if the top panel is paneling deformed by pressure (doming deformation), sustained breakdown voltage sealing has been performed, also has the advantage that excellent sealing property even when an impact or the like is applied is maintained. しかも、容器への打栓や容器からの開栓時に環状凸部とライナー実質上の垂直部との間に作用する力も、引き剥がし力ではなく、主として上下方向或いは周方向の剪断力であるので、環状凸部とライナー実質上の垂直部との間の密着性が損なわれないという利点がある。 Moreover, the force acting between the annular protrusion when unplugging and liner substantially vertical portion of the capping and containers to the container is also not in peel force, since it is primarily shear forces in the vertical direction or the circumferential direction , there is an advantage that adhesion is not impaired between the annular protruded portion and the liner substantially vertical portion.

【0046】また、環状凸部と付け根近傍のスカート部との間に小間隔の空隙部を設けたので、環状凸部に径外方に広がる弾性変形を許容でき、これにより容器口部外周に若干の寸法誤差があっても打栓の際確実な密封が可能となり、前述した上下方向の面積シールと相俟って、 [0046] Further, since there is provided a gap portion of the small gap between the annular projection and the base near the skirt portion, it can tolerate elastic deformation extending radially outward to the annular convex portion, thereby the container opening periphery even if there is a slight dimensional error enables reliable seal during capping, I area seal coupled with the vertical direction as described above,
耐衝撃シール性をも顕著に向上させることができる。 Also impact sealability can be remarkably improved.

【0047】更に、天面部内面に環状凸部が設けてあるので、容器蓋殻体を成形するときにもこの部分が金型からの無理抜きでないため、成形操作が容易であるばかりではなく、環状凸部の形状及び寸法等にも格別の制約を受けないという利点もある。 [0047] Further, since are annular projection is provided on the top surface inner surface, since even this part when molding the container closure shell is not unreasonable disconnect from the mold, not only molding operation is easy, on the shape and size of the annular projection or the like there is an advantage that is not subject to special restrictions. またライナーの成型時においても、外側スリー先端と環状凸部とが確実に係合した状態で、樹脂圧による厚肉のライナー周辺部及びライナーの実質上の垂直部の形成が行われると共に、ライナー材樹脂が上記部分以外に漏れることもなく、形状及び寸法精度の良好なライナーを形成することができる。 Also in the time of molding of the liner, in a state in which the outer three tips and the annular convex portion has reliably engaged, with the formation of the liner periphery of the thick by the resin pressure and substantially in the vertical portion of the liner is carried out, the liner it no the wood resin leaks other than the above portion, it is possible to form a good liner shape and dimensional accuracy.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の容器蓋の一例を容器口部と共に示す側面断面図である。 1 is a side cross-sectional view shown with the container opening to an example of the container closure of the present invention.

【図2】容器蓋殻体中での密封用ライナーの成型方法を説明するための工程図であって、密封用ライナー樹脂供給工程(A)の説明図である。 [2] a process view for explaining a method of molding the sealing liner in the container Futakara body in an illustration of a sealing liner resin supplying step (A).

【図3】容器蓋殻体中での密封用ライナーの成型方法を説明するための工程図であって、ライナー成型用工具の下降開始工程(B)の説明図である。 [3] a process view for explaining a method of molding the sealing liner in the container Futakara body in an illustration of lowering starting step of the liner molding tool (B).

【図4】容器蓋殻体中での密封用ライナーの成型方法を説明するための工程図であって、成形準備終了工程(C)の説明図である。 [4] a process view for explaining a method of molding the sealing liner in the container Futakara body in an explanatory view of a shaped preparation complete step (C).

【図5】容器蓋殻体中での密封用ライナーの成型方法を説明するための工程図であって、成形終了工程(D)の説明図である。 [5] a process view for explaining a method of molding the sealing liner in the container Futakara body in an explanatory diagram of the completion of molding process (D).

【図6】このリブ構造の実施例を示す側面断面図である。 6 is a side sectional view showing an embodiment of the rib structure.

【図7】図6の実施例の下面図である。 7 is a bottom view of the embodiment of FIG.

【図8】図6の実施例の斜視図である。 8 is a perspective view of the embodiment of FIG.

【図9】容器蓋殻体の環状凸部の一例を示す拡大断面図である。 9 is an enlarged cross-sectional view showing an example of the annular projection of the container closure shell.

【図10】容器蓋殻体の環状凸部の他の例を示す拡大断面図である。 10 is an enlarged sectional view showing another example of the annular projection of the container closure shell.

【図11】容器蓋殻体の可撓性先端を備えた環状凸部の一例を示す拡大断面図である。 11 is an enlarged sectional view showing an example of an annular protrusion having a flexible tip of the container closure shell.

【図12】容器蓋殻体の可撓性先端を備えた環状凸部の他の例を示す拡大断面図である。 12 is an enlarged sectional view showing another example of the annular projection having a flexible tip of the container closure shell.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 容器蓋殻体(シェル) 2 ライナー 3 容器口部 4 天面部 5 スカート部 6 雌ねじ 7 ローレット溝 8a フラップ片 8 締結用バンド 9 ピルーファプルーフ機構 10 雄ねじ 11 係止用あご部 12 支持リング 13 頂部 14 密封用外周部 15 天面部内面 16 スカート付根近傍部分 17 小間隔の空隙 18 環状凸部 19 環状凸部の内側面 19b 環状凸部の外側面 20 可撓性先端部 21 ライナーの立下り部 22 薄肉の中央部 23 厚肉の周辺部 24 テーパ状の下向き突起部 25 内方リブ 26 開栓時のガス抜き 27 内向きのカール部 28 密封用ライナー形成用樹脂の溶融ペレット 29 切断線 30 ライナー中央部形成用先端部 31 コア 32 ライナー密封部形成用先端部 33 中間ブッシュ 34 係合用先端部 35 外側ス 1 container closure shell (shell) 2 liner 3 container opening 4 top part 5 skirt 6 female screw 7 knurls 8a flap piece 8 fastening band 9 pin Rufa proof mechanism 10 male screw 11 locking jaw portion 12 supports ring 13 top 14 sealing the outer periphery 15 top panel inner surface 16 the skirt root portion near 17 fall portion of the outer surface 20 flexible leader 21 liner inner surface 19b annular protrusion of the gap 18 the annular projection 19 annular protrusion of the small gap 22 thin central portion 23 thickness peripheral portion 24 tapered downward protrusion 25 inward rib 26 unplugging during melt pellets 29 cutting lines 30 liner central vent 27 inward curl portion 28 sealing liner forming resin of meat parts forming tip 31 the core 32 liner sealing portion forming the distal end portion 33 intermediate bush 34 engagement tip 35 outer scan リーブ 36 切り欠き 38 複数のリブ Reeve 36 notch 38 a plurality of ribs

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−183352(JP,A) 特開 昭57−194938(JP,A) 特開 昭59−2810(JP,A) 特開 昭60−183355(JP,A) 特開 昭60−240655(JP,A) (58)調査した分野(Int.Cl. 7 ,DB名) B65D 39/00 - 55/16 B65D 35/44 - 35/54 B29D 31/00 - 31/02 ────────────────────────────────────────────────── ─── of the front page continued (56) reference Patent Sho 60-183352 (JP, a) JP Akira 57-194938 (JP, a) JP Akira 59-2810 (JP, a) JP Akira 60- 183355 (JP, a) JP Akira 60-240655 (JP, a) (58 ) investigated the field (Int.Cl. 7, DB name) B65D 39/00 - 55/16 B65D 35/44 - 35/54 B29D 31/00 - 31/02

Claims (7)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】 合成樹脂容器蓋の天面部と、内側に容器口部係合用ネジを備えたスカート部と、該天面部内面から内向きに且つスカート付根近傍部分より径内方に小間隔の空隙をおいて形成された環状凸部と、前記天面部内側に押圧成形により施された密封用ライナーと、環状凸部の内側面にこれに沿って形成されたライナーの実質上の垂直部とから成り、容器口部外側縁とライナーの実質上の垂直部との係合により密封性をもたせると共に、前 And 1. A top surface of the synthetic resin container closure, a skirt portion having a container mouth portion engaging screws inside, the small intervals radially inner side relative and the skirt root portion near inwardly from the top panel face the inner surface an annular convex portion formed at the air gap, a sealing liner which has been subjected by the press forming inside the top section, and a substantially vertical portion of the liner which is formed along which the inner surface of the annular projection from made, remembering sealability by the engagement of the substantially vertical portion of the container mouth portion outer edge and the liner Rutotomoni, before
    記環状凸部とスカート付根近傍部分との間にこれらを橋 These bridges between the serial annular protrusion and the skirt root portion near
    絡する複数のリブが周状に配置されたことを特徴とするライナー付き合成樹脂製容器蓋。 Liner plastic container closure, wherein a plurality of ribs which fault is arranged circumferentially.
  2. 【請求項2】 環状凸部の内周面が天面部に対して実質上垂直に設けられ且つ環状凸部の内周面が密封すべき容器口部の外径よりも大きく且つ容器口部係合用ネジの径よりも小さい径を有することを特徴とする請求項1記載の合成樹脂製容器蓋。 2. A substantially larger and the container opening engagement than the outer diameter of the container mouth portion inner circumferential surface to be sealed of the vertically provided and the annular projection against the inner circumferential surface of the annular convex portion top surface portion plastic container closure according to claim 1, characterized in that it has a smaller diameter than the diameter of the coupling screw.
  3. 【請求項3】 前記環状凸部が先細りでしかも外周面が内向きに傾斜した形状を有するものである請求項1記載の合成樹脂製容器蓋。 Wherein the plastic container closure of claim 1, wherein the annular protrusion is tapered in addition the outer peripheral surface and has a sloped shape inwardly.
  4. 【請求項4】 内周面が先端に向けてやや内向きに傾斜した可撓性先端部または内向きに突出した先端部を備えていることを特徴とする請求項1または3記載の合成樹脂製容器蓋。 Wherein the peripheral surface of synthetic resin according to claim 1 or 3, wherein further comprising: a tip portion protruding flexible tip or inwardly inclined inwardly slightly toward the distal end Ltd. container lid.
  5. 【請求項5】 前記環状凸部が実質上垂直の内周面を備えている請求項1または3記載の合成樹脂製容器蓋。 Wherein said annular projecting portion is plastic container closure according to claim 1 or 3 wherein is provided an inner circumferential surface of the substantially vertical.
  6. 【請求項6】 前記環状凸部がやや内向きに傾斜した内周面を備えている請求項1または3記載の合成樹脂製容器蓋。 Wherein said plastic container closure according to claim 1 or 3, wherein the annular projection is provided with an inner peripheral surface inclined inwardly somewhat.
  7. 【請求項7】 前記複数のリブを径方向に対して傾斜した角度で配置して成る請求項記載の合成樹脂製容器蓋。 7. A plastic container closure according to claim 1, wherein comprising arranged at an inclined angle of the plurality of ribs in the radial direction.
JP14005694A 1994-06-22 1994-06-22 Plastic container closure Expired - Fee Related JP3302178B2 (en)

Priority Applications (1)

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JP14005694A JP3302178B2 (en) 1994-06-22 1994-06-22 Plastic container closure

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JP14005694A JP3302178B2 (en) 1994-06-22 1994-06-22 Plastic container closure
TW84101961A TW259772B (en) 1994-06-22 1995-03-02 Plastic container closure and method of producing the same
DE1995603712 DE69503712T2 (en) 1994-06-22 1995-03-08 The plastic closure and method of manufacture
DE1995603712 DE69503712D1 (en) 1994-06-22 1995-03-08 The plastic closure and method of manufacture
EP19950301511 EP0688723B1 (en) 1994-06-22 1995-03-08 Plastic container closure and method of producing the same
CN 95102205 CN1059149C (en) 1994-06-22 1995-03-14 Plastic container closure and method of producing the same
KR1019950005528A KR100186794B1 (en) 1994-06-22 1995-03-17 Plastic bottle cap and its manufacturing method
US08/720,924 US5769255A (en) 1994-06-22 1996-10-07 Plastic container closure with high sealing precision
US09/044,092 US5980806A (en) 1994-06-22 1998-03-19 Method of producing a plastic container closure

Publications (2)

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JPH082545A JPH082545A (en) 1996-01-09
JP3302178B2 true JP3302178B2 (en) 2002-07-15

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US (2) US5769255A (en)
EP (1) EP0688723B1 (en)
JP (1) JP3302178B2 (en)
KR (1) KR100186794B1 (en)
CN (1) CN1059149C (en)
DE (2) DE69503712D1 (en)
TW (1) TW259772B (en)

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CN1059149C (en) 2000-12-06
CN1119983A (en) 1996-04-10
US5980806A (en) 1999-11-09
TW259772B (en) 1995-10-11
KR100186794B1 (en) 1999-10-01
EP0688723B1 (en) 1998-07-29
DE69503712T2 (en) 1999-04-22
JPH082545A (en) 1996-01-09
EP0688723A1 (en) 1995-12-27
DE69503712D1 (en) 1998-09-03

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